What is Semaphore?
A delivery platform that combines CI/CD capabilities with AI-driven features through a command-line interface.
Semaphore pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Pay-per-minute metered compute: $0.0025/min (self-hosted) to $0.09/min (MacOS). Includes 20 concurrent jobs, $15/month free credits, 9.6 GB cache, and free support. Optional modular support and success services.
Compute - Ubuntu ARM
- concurrent_jobs
- 20 by default
Compute - Ubuntu x64
- concurrent_jobs
- 20 by default
Compute - MacOS
- concurrent_jobs
- 20 by default
Compute - Self-Hosted
- concurrent_jobs
- contact for limits
Add-ons
- Dedicated Cache Server$400/mo
- Private Docker Registry$400/mo
- Support - Basic$50/mo
- Support - Priority Response$250/mo
- Support - SLA Standard$500/mo
- Support - SLA Premium$750/mo
- Success - Visibility$125/mo
- Success - Performance$300/mo
- Success - Scale$1000/mo
- Success - Alliance$2000/mo
- Engineering Access$900 one-time + $1250 one-time + $2000 one-time
What Semaphore does
The capabilities that matter for ci/cd tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Hosting
- Cloud + self-hosted
- Self-hosted runners
- ✓
- Config-as-code pipelines
- ✓
- Matrix / parallel builds
- ✓
- Container-native builds
- ✓
- Build caching
- -
- Secrets management
- -
- Deployment environments & approvals
- -
- Reusable actions / marketplace
- -
Platform & deployment
Independently observed- CLI
- Cloud / SaaS
- Self-hosted
Integrations (1)
Independently observed- Flowdock
Semaphore FAQ
Common questions about Semaphore, answered from independent, dated evidence.
What is Semaphore?
An all-in-one continuous integration and delivery platform designed for modern cloud development, offering both open-source self-hosted and cloud-hosted options for building and deploying applications. It is indexed under CI/CD Tools.
Source: https://semaphore.io/
Is Semaphore free?
Semaphore offers a free tier, so you can start without paying. Paid plans start at $0.00. Pricing changes often, so verify at source before relying on it.
Source: https://semaphore.io/
What platforms does Semaphore support?
We have confirmed browser-based access to Semaphore. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.
Source: https://semaphore.io/blog/2013/03/07/semaphore-pricing-update-with-higher-plans.html
Can Semaphore be self-hosted?
Yes. Semaphore can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://semaphore.io/
What security certifications does Semaphore have?
We have independently confirmed SOC 2 and ISO 27001 for Semaphore. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Semaphore not holding them. Always confirm compliance directly before you rely on it.
Source: https://semaphore.io/
Semaphore alternatives
Other ci/cd tools we track, ranked by the same independent score.
- CircleCICI/CD automation platform for building, testing, and deploying code with workflow automation and cachinghigh · 75%
- GitHub ActionsWorkflow automation service for building, testing, and deploying code within GitHubmedium · 74%
- BuildkiteA CI/CD platform that enables unlimited parallel builds with dynamic pipeline automation and intelligent test managementmedium · 73%
- Argo CDA GitOps tool for managing application deployment and lifecycle on Kubernetes through declarative configurationlow · 43%
- TurborepoBuild system that optimizes development workflows through caching and concurrent task executionlow · 37%
- BazelA build system for compiling across multiple languages with fast incremental builds through intelligent caching and distributed executionlow · 43%
Compare Semaphore
Side by side against other ci/cd tools, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Semaphore, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Security posture | 80 | 0.18 | 14.1 | ✓ |
| Reliability | 50 | 0.05 | 2.7 | ✓ |
| Capabilities | 67 | 0.04 | 2.6 | ✓ |
| Price level | 80 | 0.03 | 2.2 | ✓ |
| Pricing transparency | 45 | 0.04 | 1.8 | ✓ |
| Integrations | 9 | 0.04 | 0.4 | ✓ |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 5 items | mediumsource · 2026-09-10 · 58% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Hosting: both · Matrix builds: Yes · Yaml pipelines: Yes · Container native: Yes · Self hosted runners: Yes | mediumsource · 2026-09-03 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 1 | mediumsource · 2026-08-13 · 60% |
Pricing
Reliability
| Attribute | Value | Evidence |
|---|---|---|
| Status page | Yes | mediumsource · 2026-08-03 · 60% |
Security
Is Semaphore the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank Semaphore against the rest of the ci/cd tools we index, using the same dated evidence weighted your way.
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